The U11 Solstice has dual air support. Each side is controlled separately for individualized comfort, as is the case with all Comfortaire mattresses in two-sleeper sizes. The Solstice uses the AttuneDesign air support system with urethane film air chambers atop a high density foam support core. This was developed by Comfortaire from its OriginalAirTechnology.

The urethane air chambers are shorter (3½") and thinner-walled than the previous 6" high cotton-latex version. They are also higher up in the mattress, closer to the sleepers, and extend the full width and length for Edge-to-Edge Air Support with full adjustability.

The 2" base foam support core is made of highly resilient synthetic latex. The purpose of this layer is to support the air chambers while serving as a shock absorber. This is also to help the air support unit to conform to the sleeper's body for pressure relief and proper spinal posturing. Since the support core is only 2" high, it does not require perimeter encasement.

At the top of the Comfortaire U11 Solstice is the cover made of bamboo fibers, the same as used in G13 Horizons and G12 Sonata in the Genesis Series. Bamboo fibers, with their mesh-like structure, wick up moisture and carry it away from the sleeping surface. This moisture evaporates to create a cooling effect (this is the principle used in swamp coolers).

The only thing between the AttuneDesign air chambers and the cover is the 3¼" Evellafoam comfort layer. Evellafoam is a fusion of memory foam and synthetic latex, combining benefits of both materials. It is scented with green tea extract for odor protection and freshness. Green tea extract is an antioxidant, inhibits microbes, and is hypoallergenic.

The preferred foundation for the U11 Soltice split-top air bed is an adjustable bed, especially one with only the head adjustable, or a split-sized unit with synchronized foot sections. Comfortaire sells the Silhouette by Leggett & Platt, which is available in split sizes.

The Comfortaire U11 Solstice comes with a 25-year (4/25) limited warranty. The first four years are not prorated, and the remaining years are. It is anticipated that retailers will be carrying this model by the end of 2014.